Color Picker Example - Kivy Typing CST Test
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Color Picker Example — Kivy Code
Uses Kivy’s ColorPicker widget to change background color dynamically.
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.colorpicker import ColorPicker
from kivy.graphics import Color, Rectangle
class ColorPickerApp(App):
def build(self):
self.layout = BoxLayout()
self.picker = ColorPicker()
self.picker.bind(color=self.on_color)
self.layout.add_widget(self.picker)
with self.layout.canvas.before:
self.bg = Color(1,1,1)
self.rect = Rectangle(size=self.layout.size, pos=self.layout.pos)
return self.layout
def on_color(self, instance, value):
self.bg.rgb = value[:3]
if __name__ == '__main__':
ColorPickerApp().run()Kivy Language Guide
Kivy is an open-source Python framework for building cross-platform multitouch applications on Android, iOS, Windows, macOS, Linux, and Raspberry Pi. It provides a UI toolkit, gesture support, animations, layouts, and a declarative KV language for rapid app development.
Primary Use Cases
- ▸Mobile apps (Android/iOS)
- ▸Touchscreen kiosks and dashboards
- ▸Cross-platform GUI apps in Python
- ▸Prototyping and educational tools
- ▸Raspberry Pi and hardware interfaces
Notable Features
- ▸KV language for declarative UI
- ▸GPU-accelerated rendering
- ▸Multitouch gesture framework
- ▸Cross-platform build tools
- ▸Rich widget and layout system
Origin & Creator
Kivy was created by Mathieu Virbel and the Kivy Organization, evolving from the PyMT project and released publicly in 2011 as a modern Python GUI + mobile app framework.
Industrial Note
Kivy is especially loved in education, research environments, rapid prototyping, Raspberry Pi projects, and Python-first development teams requiring cross-platform touch UIs.